obiter dictum
/ˈdɪktəm/noun
(pl. obiter dicta /-tə/ )
1- Law a judge's expression of opinion uttered in court or giving judgement, but not essential to the decision and not part of the ratio decidendi【律】（法官在法庭上或在审判时发表的, 对裁决非绝对必要且不涉及法律原则的）附带意见。
1.1
- an incidental remark顺便说的话, 附带意见。
词源
Latin obiter 'in passing' + dictum 'something that is said'.